121111216097 has 4 divisors (see below), whose sum is σ = 122918846256. Its totient is φ = 119303585940.

The previous prime is 121111216073. The next prime is 121111216103. The reversal of 121111216097 is 790612111121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121111216097 - 2³⁰ = 120037474273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111216007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903814979 + ... + 903815112.

It is an arithmetic number, because the mean of its divisors is an integer number (30729711564).

Almost surely, 2^121111216097 is an apocalyptic number.

It is an amenable number.

121111216097 is a deficient number, since it is larger than the sum of its proper divisors (1807630159).

121111216097 is an equidigital number, since it uses as much as digits as its factorization.

121111216097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807630158.

The product of its (nonzero) digits is 1512, while the sum is 32.

The spelling of 121111216097 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred sixteen thousand, ninety-seven".